fule giting in to oil. fi 2.9I v6
OK no offense, I understand this forum is world wide, OK? Fuel, and quart. Fuel, like gas? Are you maybe mistaking a gasoline odor for coolant? If so you are talking head gasket, . Major repair..Did your truck ever get hot really hot in red?
If you run the car in cold weather, the fuel mixture is richened to warm engine, excess fuel not burned can get into the oil. Also, if you have a car that starts hard-long cranking or has a misfire; the excess gas that is not burned will get into your oil. Your engine has been severely flooded or, if your car has a carburetor, the float needle seat is shot. Whenever your oil smells like gasoline it's very bad for your engine. Change the oil ASAP. Your engine maybe tired. you have what is called blow-by. your piston rings are not sealing on the cylinder wall. .
its your fuel pressure regulator. the diaphram goes bad putting fuel into the intake via vaccum line. pretty easy fix beware if not fixed it will fill your crankcase full which will ruin your crank bearings.
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